Contribute
Register

[Guide] Disabling discrete graphics in dual-GPU laptops

ramzha said:
Hi everyone, I got a problem with disabling my AMD radeon card. The problem is that Ioreg shows that AMD support is avalable at PCI0.RP09.GFX0, but as far as I know GFX0 is for integrated graphics, not for the discrete. _INI and _OFF methods are located in SSDT-5 and SSDT-0 aml. But the _REG in DSDT is not kind of attached to any of these devices, any solution from what excatly I should start?
Click to expand...

ramzha said:
Thanks Rehabman, but how should I know which one to disable, and the paths under the methods quite different than those provided in this guide, can you please give hint where I should start?
Click to expand...

Your ioreg/IOService shows your AMD device at PCI0.RP09.GFX0.
But I think that is due to renaming that WhateverGreen is doing (I would probably disable that feature).

The actual path is _SB.PCI0.RP09.PEGP, as you can see when you start to look at IOACPIPlane and the actual ACPI files.

You have a PowerResource macro at _SB.PCI0.RP09 that has an _OFF:
Code: 
            Method (_OFF, 0, Serialized)  // _OFF: Power Off
            {
                P8XH (Zero, 0xAA)
                \_SB.PCI0.RP09.PEGP.HGOF ()
                Store (Zero, _STA)
            }

For the most part, it calls PEGP.HGOF (all in SSDT-5).

So first step would be to call _OFF from the _INI at the HGOF path.
It is a one line addition.
Code: 
        Method (_INI, 0, NotSerialized)  // _INI: Initialize
        {
            Store (0x07, CMDR)
            Store (0x07, CMDS)
            Store (SVID, HVID)
            Store (SDID, HDID)
            Store (BADR, BARD)
            HGOF() // added to turn off AMD graphics
        }

There doesn't appear to be any EC references in the HGOF code, so no need to fiddle with moving anything to _REG.
 
hello rehab man, may u check my dsdt/ssdt and help me disabling DGPU? _INI is in SSDT 5 and _OFF is in PowerResurce in SSDT too.. I found a method called SGOF but I cant understand the way to reach him.. are 2 days I'm studying your patching guide but I'm still confused...
 

Attachments

  • debug_27851.zip
    2.1 MB · Views: 83
mastermoon said:
hello rehab man, may u check my dsdt/ssdt and help me disabling DGPU? _INI is in SSDT 5 and _OFF is in PowerResurce in SSDT too.. I found a method called SGOF but I cant understand the way to reach him.. are 2 days I'm studying your patching guide but I'm still confused...
Click to expand...

Are you certain ACPI/origin/* files are the result of dumping with the discrete card enabled in BIOS?
Do you have the latest BIOS?

But SGOF is easy to find... it is in SSDT-5.
 
yes the cards can't be disabled from bios, yes I have the latest Bios available.. but how I have to call it? directly above the ini using your patch call off from ini?
 
mastermoon said:
yes the cards can't be disabled from bios, yes I have the latest Bios available.. but how I have to call it? directly above the ini using your patch call off from ini?
Click to expand...

It is all covered in the guide... you'll just be calling SGOF instead of _OFF.
Don't forget to move the EC related code to _REG.
 
helping my friend to disable DGPU but can't disassemble DSDT and SSDTs getting error
Intel ACPI Component Architecture

ASL+ Optimizing Compiler/Disassembler version 20180427(RM)

Copyright (c) 2000 - 2018 Intel Corporation


Input file APIC.aml, Length 0xBC (188) bytes

ACPI: APIC 0x0000000000000000 0000BC (v03 DELL CBX3 01072009 AMI 00010013)

External object resolution file XSDT.aml

Input file XSDT.aml, Length 0xFC (252) bytes

XSDT.aml: Table [XSDT] is not an AML table - ignoring

External object resolution file WSMT.aml

Input file WSMT.aml, Length 0x28 (40) bytes

WSMT.aml: Table [WSMT] is not an AML table - ignoring

External object resolution file UEFI.aml

Input file UEFI.aml, Length 0x42 (66) bytes

UEFI.aml: Table [UEFI] is not an AML table - ignoring

External object resolution file SSDT-9x-ApHwp.aml

Input file SSDT-9x-ApHwp.aml, Length 0x317 (791) bytes

ACPI: SSDT 0x0000000000000000 000317 (v02 PmRef ApHwp 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-8x-Cpu0Hwp.aml

Input file SSDT-8x-Cpu0Hwp.aml, Length 0xBA (186) bytes

ACPI: SSDT 0x0000000000000000 0000BA (v02 PmRef Cpu0Hwp 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-7x-ApCst.aml

Input file SSDT-7x-ApCst.aml, Length 0x30A (778) bytes

ACPI: SSDT 0x0000000000000000 00030A (v02 PmRef ApCst 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-6x-Cpu0Cst.aml

Input file SSDT-6x-Cpu0Cst.aml, Length 0x3FF (1023) bytes

ACPI: SSDT 0x0000000000000000 0003FF (v02 PmRef Cpu0Cst 00003001 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-5x-ApIst.aml

Input file SSDT-5x-ApIst.aml, Length 0xD14 (3348) bytes

ACPI: SSDT 0x0000000000000000 000D14 (v02 PmRef ApIst 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-4x-Cpu0Ist.aml

Input file SSDT-4x-Cpu0Ist.aml, Length 0x58B (1419) bytes

ACPI: SSDT 0x0000000000000000 00058B (v02 PmRef Cpu0Ist 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-3-CpuSsdt.aml

Input file SSDT-3-CpuSsdt.aml, Length 0x17AE (6062) bytes

ACPI: SSDT 0x0000000000000000 0017AE (v02 CpuRef CpuSsdt 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-2-xh_OEMBD.aml

Input file SSDT-2-xh_OEMBD.aml, Length 0x825 (2085) bytes

ACPI: SSDT 0x0000000000000000 000825 (v02 INTEL xh_OEMBD 00000000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-19-AmdTabl.aml

Input file SSDT-19-AmdTabl.aml, Length 0xF88 (3976) bytes

ACPI: SSDT 0x0000000000000000 000F88 (v01 AmdRef AmdTabl 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-18-SgUlx.aml

Input file SSDT-18-SgUlx.aml, Length 0x281 (641) bytes

ACPI: SSDT 0x0000000000000000 000281 (v02 SgRef SgUlx 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-17-SgPch.aml

Input file SSDT-17-SgPch.aml, Length 0x699 (1689) bytes

ACPI: SSDT 0x0000000000000000 000699 (v02 SgRef SgPch 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-17-AmdTabl.aml

Input file SSDT-17-AmdTabl.aml, Length 0xF88 (3976) bytes

ACPI: SSDT 0x0000000000000000 000F88 (v01 AmdRef AmdTabl 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Firmware Error (ACPI): Failure creating [\_SB.PCI0.RP01.PEGP._ON], AE_ALREADY_EXISTS (20180427/dswload-498)

ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20180427/psobject-371)

Could not parse external ACPI tables, AE_ALREADY_EXISTS
 

Attachments

  • origin.zip
    94 KB · Views: 71
rajuchacharuk said:
helping my friend to disable DGPU but can't disassemble DSDT and SSDTs getting error
Intel ACPI Component Architecture

ASL+ Optimizing Compiler/Disassembler version 20180427(RM)

Copyright (c) 2000 - 2018 Intel Corporation


Input file APIC.aml, Length 0xBC (188) bytes

ACPI: APIC 0x0000000000000000 0000BC (v03 DELL CBX3 01072009 AMI 00010013)

External object resolution file XSDT.aml

Input file XSDT.aml, Length 0xFC (252) bytes

XSDT.aml: Table [XSDT] is not an AML table - ignoring

External object resolution file WSMT.aml

Input file WSMT.aml, Length 0x28 (40) bytes

WSMT.aml: Table [WSMT] is not an AML table - ignoring

External object resolution file UEFI.aml

Input file UEFI.aml, Length 0x42 (66) bytes

UEFI.aml: Table [UEFI] is not an AML table - ignoring

External object resolution file SSDT-9x-ApHwp.aml

Input file SSDT-9x-ApHwp.aml, Length 0x317 (791) bytes

ACPI: SSDT 0x0000000000000000 000317 (v02 PmRef ApHwp 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-8x-Cpu0Hwp.aml

Input file SSDT-8x-Cpu0Hwp.aml, Length 0xBA (186) bytes

ACPI: SSDT 0x0000000000000000 0000BA (v02 PmRef Cpu0Hwp 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-7x-ApCst.aml

Input file SSDT-7x-ApCst.aml, Length 0x30A (778) bytes

ACPI: SSDT 0x0000000000000000 00030A (v02 PmRef ApCst 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-6x-Cpu0Cst.aml

Input file SSDT-6x-Cpu0Cst.aml, Length 0x3FF (1023) bytes

ACPI: SSDT 0x0000000000000000 0003FF (v02 PmRef Cpu0Cst 00003001 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-5x-ApIst.aml

Input file SSDT-5x-ApIst.aml, Length 0xD14 (3348) bytes

ACPI: SSDT 0x0000000000000000 000D14 (v02 PmRef ApIst 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-4x-Cpu0Ist.aml

Input file SSDT-4x-Cpu0Ist.aml, Length 0x58B (1419) bytes

ACPI: SSDT 0x0000000000000000 00058B (v02 PmRef Cpu0Ist 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-3-CpuSsdt.aml

Input file SSDT-3-CpuSsdt.aml, Length 0x17AE (6062) bytes

ACPI: SSDT 0x0000000000000000 0017AE (v02 CpuRef CpuSsdt 00003000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-2-xh_OEMBD.aml

Input file SSDT-2-xh_OEMBD.aml, Length 0x825 (2085) bytes

ACPI: SSDT 0x0000000000000000 000825 (v02 INTEL xh_OEMBD 00000000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-19-AmdTabl.aml

Input file SSDT-19-AmdTabl.aml, Length 0xF88 (3976) bytes

ACPI: SSDT 0x0000000000000000 000F88 (v01 AmdRef AmdTabl 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-18-SgUlx.aml

Input file SSDT-18-SgUlx.aml, Length 0x281 (641) bytes

ACPI: SSDT 0x0000000000000000 000281 (v02 SgRef SgUlx 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-17-SgPch.aml

Input file SSDT-17-SgPch.aml, Length 0x699 (1689) bytes

ACPI: SSDT 0x0000000000000000 000699 (v02 SgRef SgPch 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Pass 2 parse of [SSDT]

External object resolution file SSDT-17-AmdTabl.aml

Input file SSDT-17-AmdTabl.aml, Length 0xF88 (3976) bytes

ACPI: SSDT 0x0000000000000000 000F88 (v01 AmdRef AmdTabl 00001000 INTL 20160422)

Pass 1 parse of [SSDT]

Firmware Error (ACPI): Failure creating [\_SB.PCI0.RP01.PEGP._ON], AE_ALREADY_EXISTS (20180427/dswload-498)

ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20180427/psobject-371)

Could not parse external ACPI tables, AE_ALREADY_EXISTS
Click to expand...

No issue with disassembly: iasl -dl DSDT.aml SSDT*.aml
 
Hi, i followed the guide but I dont seem able to find the _OFF method on my SSDT files
Thanks in advanced
 

Attachments

  • origin.zip
    52.9 KB · Views: 86
Dell said:
Hi, i followed the guide but I dont seem able to find the _OFF method on my SSDT files
Thanks in advanced
Click to expand...

Really?
Likely in SSDT-7. Note:
Code: 
NUC6i7KYK:origin rehabman$ grep Method.*_OFF *.dsl
SSDT-1-Ther_Rvp.dsl:            Method (_OFF, 0, Serialized)  // _OFF: Power Off
SSDT-6-SgPch.dsl:            Method (_OFF, 0, Serialized)  // _OFF: Power Off
SSDT-7-AmdTabl.dsl:        Method (_OFF, 0, Serialized)  // _OFF: Power Off
 
RehabMan said:
Really?
Likely in SSDT-7. Note:
Code: 
NUC6i7KYK:origin rehabman$ grep Method.*_OFF *.dsl
SSDT-1-Ther_Rvp.dsl:            Method (_OFF, 0, Serialized)  // _OFF: Power Off
SSDT-6-SgPch.dsl:            Method (_OFF, 0, Serialized)  // _OFF: Power Off
SSDT-7-AmdTabl.dsl:        Method (_OFF, 0, Serialized)  // _OFF: Power Off
Click to expand...
But it’s inside of a function, its that ok?
 
You must log in or register to reply here.
Copyright © 2010 - 2024 tonymacx86 LLC
Back
Top